Automatic blowing-in system of iron alloy refining electric furnace

Abstract

The invention relates to the technical field of iron alloy smelting, in particular to an automatic blow-in system of an iron alloy refining electric furnace. Comprising a manipulator, a guide rail frame is connected to the manipulator, two sliding blocks are arranged on the guide rail frame in a sliding mode, a translation mechanism is further arranged on the guide rail frame and used for driving the sliding blocks to translate on the guide rail frame, a connecting frame and a guide rod are connected to one sliding block, and a hollow frame is arranged on the guide rod in a sliding mode. By introducing the manipulator, the brushless motor, the air pump and other automatic assemblies, the dependence on manual operation is reduced, the furnace eye can be automatically opened and blocked, time and labor are saved, the furnace eye opening and blocking speed and precision are improved, the operation process of the iron alloy refining electric furnace is accelerated, the continuity and stability of overall production are improved, and the production efficiency is improved. And an automatic system is adopted to replace a mode of manually holding an air blowing pipe, so that misoperation caused by fatigue or skill difference of workers is avoided, and the safety of operators is protected.

Description

Technical Field

[0001] The invention relates to the technical field of ferroalloy smelting, and in particular to an automatic furnace opening system for a ferroalloy refining electric furnace. Background Art

[0002] Ferroalloy refining is a key link in the metallurgical industry. Its purpose is to remove impurities in ferroalloys through physical or chemical methods to improve the quality of the alloy. In the ferroalloy refining process, electric furnaces, as important smelting equipment, are widely used in the production of various ferroalloys. With the improvement of product quality requirements and the emphasis on production efficiency, safety and environmental protection in modern manufacturing, traditional manual operations have gradually exposed many shortcomings.

[0003] Traditionally, after the electric furnace completes smelting, workers need to open the furnace eye to release the ferroalloy liquid. The specific steps are: manually hold the air blow pipe, then connect one end of the air blow pipe to the gas source, and insert the other end into the furnace eye. Then the gas source passes compressed gas into the air blow pipe, so as to use the force of compressed air and artificial thrust to push the plugging material at the furnace eye, so that the ferroalloy liquid flows from the furnace into the iron ladle for molding. After this step is completed, the furnace eye needs to be blocked again to prepare for the next round of smelting. In the above operation, since the manual operation of opening the plugging furnace eye is time-consuming and depends on the proficiency and physical strength of the workers, it is easy to waste time and irrational use of human resources, affecting the continuity and stability of production. In addition, frequent manual intervention also increases the possibility of errors. When the worker holds the air blow pipe to open the furnace eye, if the connection between the air blow pipe and the soft connection is not tight enough, it may cause flashback. Flashback refers to the reverse flow of flame into the gas supply pipeline, which may not only damage the equipment, but also have the risk of causing fire or explosion, posing a serious safety hazard to the operator. Summary of the invention

[0004] In view of this, the present invention provides an automatic furnace opening system for an ferroalloy refining electric furnace, which can solve the shortcomings of the traditional manual furnace opening and blocking operation, which is not only time-consuming and labor-intensive, but also prone to errors and has potential safety hazards.

[0005] The technical scheme is as follows: an automatic furnace opening system for an ferroalloy refining electric furnace, comprising a manipulator, a guide rail frame connected to the manipulator, two sliding blocks slidably arranged on the guide rail frame, a translation mechanism also arranged on the guide rail frame, the translation mechanism is used to drive the sliding block to translate on the guide rail frame, one of the sliding blocks is connected to a connecting frame and a guide rod, a hollow frame is slidably arranged on the guide rod, a rotating tube is rotatably connected in the hollow frame, a gas transmission mechanism is arranged on the guide rail frame, the gas transmission mechanism is used to input compressed gas into the hollow frame and the rotating tube, a torque sensor is slidably arranged on the connecting frame, the input end of the torque sensor is connected to the rotating tube, and the torque sensor is connected to the rotating tube. The output end is connected to a connecting pipe, on which an internal threaded joint is provided. The internal threaded joint is used for docking with the furnace eye. The compressed gas in the rotating tube is sent into the furnace eye to push away the eye-blocking material at the furnace eye. An air pressure sensor is provided on the connecting pipe, and a controller is installed on the connecting frame. The connecting frame is also provided with a rotating mechanism for driving the rotating tube to rotate. A storage barrel for storing the eye-blocking material is connected to another sliding block. The storage barrel is provided with a feed port and a discharge port, and a thread is provided at the feed port. A pushing mechanism is provided on the guide rail frame, and the pushing mechanism is used to push the eye-blocking material in the storage barrel into the furnace eye to block the furnace eye.

[0006] Optionally, the translation mechanism includes a rack, a first brushless motor and a first gear, the guide rail frame is symmetrically provided with the rack, the sliding block is mounted with the first brushless motor, the first brushless motor is connected with the first gear, and the first gear is meshed with the rack.

[0007] Optionally, the air delivery mechanism includes a first air pump, a winding shaft, a mainspring and a first air pipe. The first air pump is installed on the side of the guide frame. The winding shaft is rotatably installed on the sliding block installed with the connecting frame. A mainspring is arranged between the winding shaft and the sliding block installed with the connecting frame. The first air pipe is wound on the winding shaft. The first air pipe passes through the winding shaft. Both ends of the first air pipe are respectively connected to the air outlet of the first air pump and the hollow frame.

[0008] Optionally, the rotating mechanism includes a second gear, a second brushless motor, a third gear and a spring. The second gear is connected to the rotating tube, and the second brushless motor is also installed on the sliding block equipped with the connecting frame. The third gear is connected to the second brushless motor, and the second gear is meshed with the third gear. A spring is arranged between the hollow frame and the sliding block equipped with the connecting frame.

[0009] Optionally, the pushing mechanism includes a second air pump, a second air pipe, a plug cover, a nut and a piston. A second air pump is also installed on the side of the guide rail frame. The air outlet of the second air pump is connected to the storage barrel through the second air pipe. A plug cover is provided at the feed port of the storage barrel. A nut is rotatably provided on the plug cover, and the nut cooperates with the thread of the feed port of the storage barrel. A piston is slidably provided in the storage barrel, and the piston is used to push the eye-plugging material in the storage barrel to the discharge port.

[0010] Optionally, a ceramic fiber gasket is also included. The end of the connecting pipe is connected to the ceramic fiber gasket, the ceramic fiber gasket is located on the inner side of the internal thread joint, and the ceramic fiber gasket is used to seal the internal thread joint and the furnace eye.

[0011] Optionally, a cleaning mechanism is also included, which includes a servo motor, an electric push rod, a connecting rod and a wire brush. The servo motor is installed at the end of the rotating tube, and the electric push rod is connected to the output shaft of the servo motor. The electric push rod is located on the inner side of the rotating tube. The telescopic rod of the electric push rod is connected to the connecting rod, which passes through the rotating tube, the torque sensor and the connecting tube. The end of the connecting rod is connected to a wire brush, which is located on the inner side of the connecting tube. The wire brush is used to clean the furnace eye.

[0012] Optionally, a cooling mechanism is also included, which includes a shell and tube heat exchanger, a refrigerator, a water pump, a return pipe, a water pipe, cooling fins, a fan and an air outlet pipe. The shell and tube heat exchanger is arranged on the connecting frame, and the inner side of the shell and tube heat exchanger is in contact with the outer wall of the connecting pipe. The refrigerator and the water pump are installed on the guide rail frame. The water outlet of the water pump is connected with the water inlet of the refrigerator. The water inlet of the water pump is connected with the water outlet of the shell and tube heat exchanger through the return pipe. The water inlet of the shell and tube heat exchanger is connected with the water outlet of the refrigerator through the water pipe. Cooling fins are arranged on the top of the refrigerator. A fan is installed on the guide rail frame. The fan is used to blow air to the cooling fins. The guide rail frame is also equipped with an air outlet pipe.

[0013] The beneficial effects of the present invention are: 1. The present invention reduces dependence on manual operation by introducing automated components such as manipulators, brushless motors, and air pumps, and can automatically open and block the furnace eye, which not only saves time and effort, but also improves the speed and accuracy of opening and blocking the furnace eye, and speeds up the operation process of the ferroalloy refining electric furnace, improves the continuity and stability of the overall production, and uses an automated system instead of the manual hand-held air blowpipe method, thereby avoiding misoperation due to worker fatigue or skill differences and protecting the safety of operators.

[0014] 2. The present invention adds a wire brush cleaning device driven by a servo motor, which can remove slag in the furnace eye each time it is used, keep the furnace eye clean and prevent blockage, and also help to improve the purity of the product.

[0015] 3. The present invention is equipped with a cooling system, which can effectively reduce the temperature of the connecting pipe in a high temperature environment, protect the internal components from damage, and remove heat through circulating cooling water, thereby enhancing the durability and reliability of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2It is a three-dimensional structural schematic diagram of the manipulator, guide rail frame and sliding block of the present invention.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the translation mechanism of the present invention.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the guide rod, the first air pump and the torque sensor of the present invention.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the gas transmission mechanism and the rotating mechanism of the present invention.

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the hollow frame, the rotating tube and the first air pipe of the present invention.

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the material pushing mechanism of the present invention.

[0023] Figure 8 It is a structural separation diagram of the pusher mechanism of the present invention.

[0024] Fig. 9 It is a three-dimensional structural schematic diagram of the ceramic fiber gasket and the cleaning mechanism of the present invention.

[0025] Fig.10 It is a three-dimensional structural schematic diagram of the shell and tube heat exchanger, refrigerator and water pump of the present invention.

[0026] Fig.11 It is a schematic diagram of the three-dimensional structure of the heat dissipation fins, fan and air outlet duct of the present invention.

[0027] Fig.12 It is a schematic diagram of the three-dimensional structure of the cooling mechanism of the present invention.

[0028] Description of the accompanying drawings: 1. manipulator, 2. guide rail frame, 3. sliding block, 401. rack, 402. first brushless motor, 403. first gear, 5. connecting frame, 6. guide rod, 7. hollow frame, 8. rotating tube, 901. first air pump, 902. winding shaft, 903. spring, 904. first air pipe, 10. torque sensor, 11. connecting pipe, 12. internal thread joint, 13. air pressure sensor, 14. controller, 1501. second gear, 1502. second brushless Motor, 1503, third gear, 1504, spring, 16, storage barrel, 1701, second air pump, 1702, second air pipe, 1703, plug cover, 1704, nut, 1705, piston, 18, ceramic fiber gasket, 19, servo motor, 20, electric push rod, 21, connecting rod, 22, wire brush, 23, shell and tube heat exchanger, 24, refrigerator, 25, water pump, 26, reflux pipe, 27, water pipe, 28, cooling fins, 29, fan, 30, air outlet pipe. DETAILED DESCRIPTION

[0029] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

[0030] Embodiment: An automatic furnace opening system for an electric furnace for ferroalloy refining, see Figure 1-Figure 8 As shown, the robot 1 includes a guide rail frame 2, a sliding block 3, a translation mechanism, a connecting frame 5, a guide rod 6, a hollow frame 7, a rotating tube 8, an air transmission mechanism, a torque sensor 10, a connecting tube 11, an internal thread joint 12, an air pressure sensor 13, a controller 14, a rotating mechanism, a storage barrel 16 and a pushing mechanism; the robot 1 is connected to the guide rail frame 2; two sliding blocks 3 are slidably arranged on the guide rail frame 2, and the two sliding blocks 3 are distributed up and down; the guide rail frame 2 is also provided with Translation mechanism, the translation mechanism is used to drive the sliding block 3 to translate on the guide rail frame 2; the right side of the sliding block 3 on the lower side is connected to a connecting frame 5; the left side of the sliding block 3 on the lower side is connected to two guide rods 6; a hollow frame 7 is slidably arranged between the two guide rods 6; a rotating tube 8 is rotatably connected in the hollow frame 7, and the rotating tube 8 movably passes through the sliding block 3 on the lower side; a gas transmission mechanism is arranged on the guide rail frame 2, and the gas transmission mechanism is used to input compressed gas into the hollow frame 7 and the rotating tube 8; a sliding arrangement is arranged on the connecting frame 5 There is a torque sensor 10, the input end of the torque sensor 10 is connected to the right end of the rotating tube 8, and the output end of the torque sensor 10 is connected to the connecting tube 11; the right end of the connecting tube 11 is provided with an internal threaded joint 12, and the internal threaded joint 12 is used to dock with the furnace eye, and the compressed gas in the rotating tube 8 is sent into the furnace eye to push the eye-blocking material at the furnace eye; an air pressure sensor 13 is provided on the left front side of the connecting tube 11; a controller 14 is installed at the bottom of the connecting frame 5, and the torque sensor 10 and the air pressure sensor 13 are both electrically connected to the controller 14; a rotating mechanism for driving the rotating tube 8 to rotate is also provided on the connecting frame 5; a storage barrel 16 for storing eye-blocking material is connected to the upper sliding block 3, and a feed port is provided on the left top of the storage barrel 16, and a thread is provided at the feed port, and a discharge port is provided on the right side of the storage barrel 16; a pushing mechanism is provided on the guide frame 2, and the pushing mechanism is used to push the eye-blocking material in the storage barrel 16 into the furnace eye to block the furnace eye.

[0031] See also Figure 3 As shown, the translation mechanism includes a rack 401, a first brushless motor 402 and a first gear 403; four racks 401 are symmetrically arranged on the guide rail frame 2; four first brushless motors 402 are installed on the upper and lower sliding blocks 3, and the first brushless motor 402 is electrically connected to the controller 14; the first brushless motor 402 is connected to the first gear 403, the upper first gear 403 is meshed with the upper rack 401, and the lower first gear 403 is meshed with the lower rack 401.

[0032] See also Figure 4-Figure 6As shown, the air delivery mechanism includes a first air pump 901, a winding shaft 902, a spring 903 and a first air pipe 904; the first air pump 901 is installed on the front left side of the guide frame 2; the winding shaft 902 is rotatably installed on the front side of the lower sliding block 3; the two ends of the spring 903 are respectively connected to the rear side of the winding shaft 902 and the front side of the lower sliding block 3; the first air pipe 904 is wound on the winding shaft 902, the first air pipe 904 runs through the middle of the winding shaft 902, and the two ends of the first air pipe 904 are respectively connected to the air outlet of the first air pump 901 and the hollow frame 7.

[0033] See also Figure 4 and Figure 5 As shown, the rotating mechanism includes a second gear 1501, a second brushless motor 1502, a third gear 1503 and a spring 1504; the second gear 1501 is connected to the rotating tube 8; the second brushless motor 1502 is installed on the lower side of the lower sliding block 3, and the second brushless motor 1502 is electrically connected to the controller 14; the third gear 1503 is connected to the second brushless motor 1502, and the second gear 1501 is meshed with the third gear 1503; a spring 1504 is connected between the right side of the hollow frame 7 and the left side of the lower sliding block 3.

[0034] See also Figure 7 and Figure 8 As shown, the pushing mechanism includes a second air pump 1701, a second air pipe 1702, a plug cover 1703, a nut 1704 and a piston 1705; the second air pump 1701 is installed on the rear side of the guide frame 2; the air outlet of the second air pump 1701 is connected with the left side of the storage barrel 16 through the second air pipe 1702; a plug cover 1703 is provided at the feed port of the storage barrel 16; a nut 1704 is rotatably provided on the plug cover 1703, and the nut 1704 cooperates with the thread of the feed port of the storage barrel 16; a piston 1705 is slidably provided on the inner side of the storage barrel 16, and the piston 1705 is used to push the eye-blocking material in the storage barrel 16 to the discharge port.

[0035] When in use, twist nut 1704 to rotate to loosen nut 1704 from the feeding port of storage barrel 16, then lift plug cover 1703 upwards, and then load the eye-plugging material into storage barrel 16 from the feeding port until a proper amount of eye-plugging material is loaded into storage barrel 16, then plug plug cover 1703 back downwards, and twist nut 1704 in reverse to fix nut 1704 at the feeding port of storage barrel 16, so that the loading operation of the eye-plugging material can be completed; thereafter, when it is necessary to push the eye-plugging material at the furnace eye, control the manipulator 1 to drive the guide rail frame 2 and the components thereon to move until the internal threaded joint 12 is aligned with the furnace The eyes are aligned and at a certain distance (the internal thread joint 12 is directly to the left of the furnace eye), and then the third gear 1503 is driven to rotate by the second brushless motor 1502, so that the third gear 1503 drives the second gear 1501 and the rotating tube 8 to rotate, thereby driving the rotating tube 8 to drive the connecting tube 11 and the internal thread joint 12 to rotate synchronously through the torque sensor 10, and at the same time, the first brushless motor 402 on the lower side drives the first gear 403 to rotate, so that the first gear 403 on the lower side rolls to the right on the rack 401 on the lower side, thereby driving the sliding block 3, the connecting frame 5, the hollow frame 7, and the rotating The tube 8, the torque sensor 10, the connecting tube 11 and the internal threaded joint 12 move to the right, so that the internal threaded joint 12 moves closer to the furnace eye. During this period, when the sliding block 3 on the lower side moves to the right, the sliding block 3 on the lower side will also drive the winding shaft 902 to move to the right. Under the pulling force of the first air pipe 904, the first air pipe 904 will drive the winding shaft 902 to rotate, so that the winding shaft 902 unwinds the first air pipe 904, and the spring 903 is deformed. When the internal threaded joint 12 contacts the furnace eye, there are two situations: if the thread inside the internal threaded joint 12 just matches the thread at the furnace eye, then the internal threaded joint 12 is in contact with the furnace eye. 12 will be rotated and screwed into the furnace eye so that the internal threaded joint 12 and the furnace eye can be docked; if the threads in the internal threaded joint 12 do not match the threads at the furnace eye, the furnace eye will block the internal threaded joint 12 from moving rightward, so that the hollow frame 7, the rotating tube 8, the torque sensor 10, the connecting tube 11 and the internal threaded joint 12 stop moving, and when the sliding block 3 and the connecting frame 5 on the lower side continue to move rightward, the spring 1504 stretches, and when the internal threaded joint 12 is rotated until the threads inside it match the threads at the furnace eye, the internal threaded joint 12 will be rotated and screwed into the furnace eye so that the internal threaded joint 12 and the furnace eye can be docked; When the internal threaded joint 12 is connected to the furnace eye, the internal threaded joint 12 will be affected by the resistance limit of the furnace eye and rotate, so that the rotation speed of the internal threaded joint 12 and the connecting pipe 11 gradually slows down. When the torque sensor 10 senses that the torque change between the rotating tube 8 and the connecting pipe 11 is greater than the preset value, the torque sensor 10 will send a signal. After receiving the signal, the controller 14 will control the second brushless motor 1502 to drive the third gear 1503 to stop rotating, so that the second gear 1501, the rotating tube 8, the connecting pipe 11 and the internal threaded joint 12 stop rotating. At the same time, the controller 14 will also control the first brushless motor 402 on the lower side to drive the first gear 403 to stop rotating, so that the sliding block 3, the connecting frame 5, the hollow frame 7, the rotating tube 8, the torque sensor 10, the connecting pipe 11 and the internal threaded joint 12 on the lower side stop moving. In this way, the internal threaded joint 12 can automatically stop moving and rotating after the internal threaded joint 12 is connected.Then, the first air pump 901 is started to input the compressed air into the hollow frame 7 and the rotating tube 8 through the first air pipe 904, so that the compressed air enters the connecting tube 11, the internal threaded joint 12 and the furnace eye from the rotating tube 8, thereby gradually increasing the air pressure of the rotating tube 8, the connecting tube 11 and the internal threaded joint 12. During this period, the air pressure in the connecting tube 11 is detected by the air pressure sensor 13. When the air pressure of the rotating tube 8, the connecting tube 11 and the internal threaded joint 12 increases to a level that can push open the eye-blocking material in the furnace eye, the compressed air in the rotating tube 8, the connecting tube 11 and the internal threaded joint 12 will push the eye-blocking material in the furnace eye. Open, in this way, the furnace eye can be opened automatically. When the blocking material in the furnace eye is pushed away, the compressed air in the rotating tube 8, the connecting tube 11 and the internal threaded joint 12 will enter the electric furnace. At this time, the air pressure in the rotating tube 8, the connecting tube 11 and the internal threaded joint 12 will decrease instantly. When the air pressure sensor 13 senses that the air pressure in the connecting tube 11 is instantly reduced, the air pressure sensor 13 will send a signal. After receiving the signal, the controller 14 will control the second brushless motor 1502 to drive the third gear 1503 to reverse, so that the third gear 1503 drives the second gear 1501 and the rotating tube 8 to reverse. , thereby driving the rotating tube 8 to drive the connecting tube 11 and the internal threaded joint 12 to synchronously reverse through the torque sensor 10, and at the same time the controller 14 will control the first brushless motor 402 on the lower side to drive the first gear 403 to reverse and reset, so that the first gear 403 on the lower side rolls to the left on the rack 401 on the lower side, thereby driving the lower sliding block 3, the connecting frame 5, the hollow frame 7, the rotating tube 8, the torque sensor 10, the connecting tube 11 and the internal threaded joint 12 to move to the left and reset, so that the internal threaded joint 12 is screwed out of the thread at the furnace eye, during which when the lower sliding block 3 moves to the left and resets, the lower sliding block 3 will also drive the winding shaft 902 to move to the left and reset, so that the winding shaft 902 relaxes the first air pipe 904. At this time, the clockwork 903 returns to its original state, and the clockwork 903 drives the winding shaft 902 to reverse and reset, so that the winding shaft 902 rewinds the first air pipe 904, thereby preventing the first air pipe 904 from being scattered. When the internal thread joint 12 is unscrewed from the thread at the furnace eye, there are two situations at this time: if the spring 1504 does not deform, the sliding block 3 and the connecting frame 5 on the lower side drive the hollow frame 7, the rotating tube 8, the torque sensor 10, the connecting tube 11 and the internal thread joint 12 to move to the left and reset normally;If the spring 1504 is deformed, the spring 1504 will exert a force to pull the hollow frame 7, the rotating tube 8, the torque sensor 10, the connecting tube 11 and the internal threaded joint 12 to the right under the influence of the elastic force of the spring 1504, so that the right end of the internal threaded joint 12 is pressed against the furnace eye, and then as the lower sliding block 3 and the connecting frame 5 continue to move to the left and reset, the spring 1504 will gradually return to its original state. After the spring 1504 is restored to its original state, the lower sliding block 3 will drive the hollow frame 7, the rotating tube 8, the torque sensor 10, the connecting tube 11 and the internal threaded joint 12 to move to the left and reset through the spring 1504, so that the internal threaded joint 12 is separated from the furnace eye, and then the first air pump 901 is turned off; Then, wait for the ferroalloy liquid in the electric furnace to flow out through the furnace eye. When the ferroalloy liquid in the electric furnace has finished flowing out through the furnace eye and needs to be blocked by plugging material, control the manipulator 1 to drive the guide rail frame 2 and the components thereon to move until the discharge port of the storage barrel 16 is aligned with the furnace eye and is at a certain distance (the discharge port of the storage barrel 16 is to the left of the furnace eye), and then drive the first gear 403 to rotate through the first brushless motor 402 on the upper side, so that the upper side The first gear 403 rolls rightward on the upper rack 401, thereby driving the upper sliding block 3 and the storage barrel 16 to move rightward, so that the discharge port of the storage barrel 16 approaches the furnace eye until the discharge port of the storage barrel 16 enters the furnace eye, and then the second air pump 1701 is started to input compressed air into the storage barrel 16 through the second air pipe 1702, so that the compressed air in the storage barrel 16 pushes the piston 1705 to move rightward, so that the piston 1705 pushes the storage barrel 16 The eye-blocking material in the furnace moves to the right, so that the eye-blocking material is discharged into the furnace eye through the discharge port of the storage barrel 16, and then the eye-blocking material blocks the furnace eye. In this way, the furnace eye can be blocked automatically. After the furnace eye is blocked, the second air pump 1701 is turned off, and then the first brushless motor 402 on the upper side drives the first gear 403 to reverse and reset, so that the first gear 403 on the upper side rolls to the left on the rack 401 on the upper side, thereby driving the upper sliding block 3 and the storage barrel 16 moves to the left and resets, so that the discharge port of the storage barrel 16 leaves the furnace eye; subsequently, when the eye-blocking material in the storage barrel 16 is used up, start the second air pump 1701 to extract the air in the storage barrel 16 through the second air pipe 1702, so that the air pressure on the left side of the piston 1705 is less than the air pressure on the right side, thereby utilizing the air pressure to drive the piston 1705 to move to the left and reset, then close the second air pump 1701, and repeat the above-mentioned eye-blocking material feeding operation to replenish the eye-blocking material.

[0036] See also Fig. 9 As shown, a ceramic fiber gasket 18 is also included; the right end of the connecting pipe 11 is connected to the ceramic fiber gasket 18, the ceramic fiber gasket 18 is located on the inner side of the internal thread joint 12, and the ceramic fiber gasket 18 is used to seal the internal thread joint 12 and the furnace eye.

[0037] By setting the ceramic fiber gasket 18, after the internal thread joint 12 and the furnace eye are connected, the ceramic fiber gasket 18 can seal the internal thread joint 12 and the furnace eye, thereby improving the sealing between the internal thread joint 12 and the furnace eye and preventing air leakage between the internal thread joint 12 and the furnace eye.

[0038] See also Fig. 9 As shown, a cleaning mechanism is also included, which includes a servo motor 19, an electric push rod 20, a connecting rod 21 and a wire brush 22; a servo motor 19 is installed at the left end of the rotating tube 8; the electric push rod 20 is connected to the output shaft of the servo motor 19, and the electric push rod 20 is located on the inner side of the rotating tube 8; a connecting rod 21 is connected to the telescopic rod of the electric push rod 20, and the connecting rod 21 passes through the rotating tube 8, the torque sensor 10 and the connecting tube 11; a wire brush 22 is connected to the right end of the connecting rod 21, and the wire brush 22 is located on the inner side of the connecting tube 11, and the wire brush 22 is used to clean the furnace eye.

[0039] When the first brushless motor 402 on the lower side drives the first gear 403 to rotate and makes the internal threaded joint 12 approach the furnace eye, it can stop when the internal threaded joint 12 is about to contact the furnace eye, and then the servo motor 19 drives the electric push rod 20, the connecting rod 21 and the wire brush 22 to rotate, and then the electric push rod 20 drives the connecting rod 21 and the wire brush 22 to move right, so that the wire brush 22 passes through the internal threaded joint 12 and enters the furnace eye, so that the wire brush 22 brushes off the slag adhered to the inner wall of the furnace eye (when the ferroalloy liquid flows out of the furnace eye, it is inevitable that some solid materials, such as incompletely melted raw materials, oxides, etc., remain on the inner wall of the furnace eye, which are slag). After the slag adhered to the inner wall of the furnace eye is brushed off, the electric push rod 20 drives the connecting rod 21 and the wire brush 22 to move right. The wire brush 22 moves to the left to reset, and then the servo motor 19 drives the electric push rod 20, the connecting rod 21 and the wire brush 22 to stop rotating, and then the first air pump 901 is started to input compressed air into the hollow frame 7 and the rotating tube 8 through the first air pipe 904, so that the compressed air enters the connecting pipe 11 and the internal threaded joint 12 from the rotating tube 8, so that the compressed air is blown into the furnace eye through the internal threaded joint 12, and then the slag scraped off in the furnace eye is blown out. After the slag scraped off in the furnace eye is blown out, the first air pump 901 is turned off again. In this way, the slag adhered to the inner wall of the furnace eye can be cleaned to prevent the slag adhesion from causing blockage in the furnace eye, and then the first brushless motor 402 on the lower side continues to drive the first gear 403 to rotate, so that the internal threaded joint 12 continues to approach the furnace eye.

[0040] See also Figure 10-12As shown, it also includes a cooling mechanism, which includes a sleeve heat exchanger 23, a refrigerator 24, a water pump 25, a return pipe 26, a water pipe 27, a heat dissipation fin 28, a fan 29 and an air outlet 30; the sleeve heat exchanger 23 is arranged on the connecting frame 5, and the inner side of the sleeve heat exchanger 23 is in contact with the outer wall of the connecting pipe 11; the refrigerator 24 is arranged in the middle of the guide rail frame 2; the water pump 25 is arranged on the front right side of the guide rail frame 2, and the water outlet of the water pump 25 is in contact with the control system 11. The water inlet of the water pump 25 is connected with the water outlet of the shell and tube heat exchanger 23 through the reflux pipe 26; the water inlet of the shell and tube heat exchanger 23 is connected with the water outlet of the refrigerator 24 through the water supply pipe 27; the top of the refrigerator 24 is provided with a cooling fin 28; a fan 29 is installed in the middle of the right side of the guide frame 2, and the fan 29 is used to blow air to the cooling fin 28; the front and rear sides of the upper left side of the guide frame 2 are connected with the air outlet duct 30.

[0041] In the initial state, the shell-and-tube heat exchanger 23 is filled with a coolant for cooling the connecting pipe 11; When in use, the coolant in the shell and tube heat exchanger 23 can be used to cool the connecting pipe 11 to prevent the high temperature in the furnace from causing thermal impact on the connecting pipe 11 through the furnace eye after the connecting pipe 11 is opened at the furnace eye. When the coolant in the shell and tube heat exchanger 23 cools the connecting pipe 11, the water pump 25 can be used to draw the coolant in the shell and tube heat exchanger 23 into the refrigerator 24 through the return pipe 26, and then the refrigerator 24 cools the coolant, and the cooled coolant is returned to the shell and tube heat exchanger 23 through the water pipe 27, so as to reduce the temperature of the coolant in the shell and tube heat exchanger 23, thereby improving the cooling effect of the coolant; when the refrigerator 24 cools the coolant, the heat dissipation fins 28 can dissipate heat for the refrigerator 24, thereby extending the service life of the refrigerator 24, and then the fan 29 is used to introduce airflow to the heat dissipation fins 28, so that the airflow can dissipate heat for the heat dissipation fins 28, and the airflow brings the hot air out from the air outlet pipe 30.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An automatic furnace opening system for an electric furnace for ferroalloy refining, comprising a manipulator (1), characterized in that: The manipulator (1) is connected to a guide rail frame (2), two sliding blocks (3) are slidably arranged on the guide rail frame (2), and a translation mechanism is also arranged on the guide rail frame (2), and the translation mechanism is used to drive the sliding blocks (3) to translate on the guide rail frame (2), one of the sliding blocks (3) is connected to a connecting frame (5) and a guide rod (6), a hollow frame (7) is slidably arranged on the guide rod (6), a rotating tube (8) is rotatably connected in the hollow frame (7), and a gas transmission mechanism is arranged on the guide rail frame (2), and the gas transmission mechanism is used to input compressed gas into the hollow frame (7) and the rotating tube (8), a torque sensor (10) is slidably arranged on the connecting frame (5), an input end of the torque sensor (10) is connected to the rotating tube (8), and an output end of the torque sensor (10) is connected to the connecting tube ( 11), an internal threaded joint (12) is provided on the connecting pipe (11), and the internal threaded joint (12) is used to dock with the furnace eye. By sending compressed gas in the rotating tube (8) into the furnace eye, the plugging material at the furnace eye is pushed open. A gas pressure sensor (13) is provided on the connecting pipe (11), and a controller (14) is installed on the connecting frame (5). The connecting frame (5) is also provided with a rotating mechanism for driving the rotating tube (8) to rotate. A storage barrel (16) for storing the plugging material is connected to the other sliding block (3). The storage barrel (16) is provided with a feed port and a discharge port, and a thread is provided at the feed port. A pushing mechanism is provided on the guide rail frame (2), and the pushing mechanism is used to push the plugging material in the storage barrel (16) into the furnace eye to plug the furnace eye.

2. An automatic furnace opening system for ferroalloy refining electric furnace according to claim 1, characterized in that: The translation mechanism comprises a rack (401), a first brushless motor (402) and a first gear (403); the rack (401) is symmetrically arranged on the guide rail frame (2); the first brushless motor (402) is mounted on the sliding block (3); the first brushless motor (402) is connected to the first gear (403); and the first gear (403) is meshed with the rack (401).

3. An automatic furnace opening system for ferroalloy refining electric furnace according to claim 2, characterized in that: The gas transmission mechanism comprises a first air pump (901), a winding shaft (902), a spring (903) and a first air pipe (904); the first air pump (901) is mounted on the side of the guide rail frame (2); the winding shaft (902) is rotatably mounted on a sliding block (3) mounted with a connecting frame (5); a spring (903) is arranged between the winding shaft (902) and the sliding block (3) mounted with the connecting frame (5); the first air pipe (904) is wound around the winding shaft (902); the first air pipe (904) penetrates the winding shaft (902); and two ends of the first air pipe (904) are respectively connected to the air outlet of the first air pump (901) and the hollow frame (7).

4. An automatic furnace opening system for ferroalloy refining electric furnace according to claim 3, characterized in that: The rotating mechanism comprises a second gear (1501), a second brushless motor (1502), a third gear (1503) and a spring (1504); the second gear (1501) is connected to the rotating tube (8); the second brushless motor (1502) is also installed on the sliding block (3) installed with the connecting frame (5); the third gear (1503) is connected to the second brushless motor (1502); the second gear (1501) is meshed with the third gear (1503); and a spring (1504) is arranged between the hollow frame (7) and the sliding block (3) installed with the connecting frame (5).

5. An automatic furnace opening system for ferroalloy refining electric furnace according to claim 4, characterized in that: The pushing mechanism comprises a second air pump (1701), a second air pipe (1702), a plug cover (1703), a nut (1704) and a piston (1705). The second air pump (1701) is also installed on the side of the guide rail frame (2). The air outlet of the second air pump (1701) is connected to the storage barrel (16) through the second air pipe (1702). The plug cover (1703) is provided at the feed port of the storage barrel (16). A nut (1704) is rotatably provided on the plug cover (1703). The nut (1704) cooperates with the thread of the feed port of the storage barrel (16). A piston (1705) is slidably provided in the storage barrel (16). The piston (1705) is used to push the eye-blocking material in the storage barrel (16) toward the discharge port.

6. An automatic furnace opening system for ferroalloy refining electric furnace according to claim 5, characterized in that: It also includes a ceramic fiber gasket (18), the end of the connecting pipe (11) is connected to the ceramic fiber gasket (18), the ceramic fiber gasket (18) is located on the inner side of the internal thread joint (12), and the ceramic fiber gasket (18) is used to seal the internal thread joint (12) and the furnace eye.

7. An automatic furnace opening system for ferroalloy refining electric furnace according to claim 6, characterized in that: The invention also comprises a cleaning mechanism, which comprises a servo motor (19), an electric push rod (20), a connecting rod (21) and a wire brush (22). The servo motor (19) is installed at the end of the rotating tube (8). The output shaft of the servo motor (19) is connected to the electric push rod (20). The electric push rod (20) is located on the inner side of the rotating tube (8). The telescopic rod of the electric push rod (20) is connected to the connecting rod (21). The connecting rod (21) passes through the rotating tube (8), the torque sensor (10) and the connecting tube (11). The end of the connecting rod (21) is connected to the wire brush (22). The wire brush (22) is located on the inner side of the connecting tube (11). The wire brush (22) is used to clean the furnace eye.

8. An automatic furnace opening system for ferroalloy refining electric furnace according to claim 7, characterized in that: The cooling device also includes a cooling mechanism, which includes a casing heat exchanger (23), a refrigerator (24), a water pump (25), a return pipe (26), a water pipe (27), a heat dissipation fin (28), a fan (29) and an air outlet pipe (30). The casing heat exchanger (23) is arranged on the connecting frame (5), and the inner side of the casing heat exchanger (23) is in contact with the outer wall of the connecting pipe (11). The refrigerator (24) and the water pump (25) are installed on the guide rail frame (2), and the water outlet of the water pump (25) is in contact with the cooling pipe (11). The water inlet of the water pump (25) is connected to the water outlet of the shell-and-tube heat exchanger (23) through a return pipe (26); the water inlet of the shell-and-tube heat exchanger (23) is connected to the water outlet of the refrigerator (24) through a water delivery pipe (27); a heat dissipation fin (28) is arranged on the top of the refrigerator (24); a fan (29) is installed on the guide rail frame (2); the fan (29) is used to blow air to the heat dissipation fin (28); and an air outlet pipe (30) is also installed on the guide rail frame (2).

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